Linked Life Data

20363293

Source:http://linkedlifedata.com/resource/pubmed/id/20363293

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
2010-5-3
pubmed:abstractText
Marijuana discontinuation has been recently reported to be anxiogenic in humans, which may predict relapse. Limited animal research has been carried out to model this withdrawal-associated negative affect. The current study sought to investigate the potential anxiety-like effects of cannabinoid withdrawal in mice. Male ICR mice were injected s.c. with delta9-tetrahydrocannabinol (THC) at 10mg/kg or vehicle once daily for 10 days. To precipitate withdrawal, the cannabinoid CB1 antagonist SR141716 (0.3, 1.0, or 3.0mg/kg) or vehicle was administrated i.p. 4h following the last THC or vehicle treatment. Thirty minutes later, mice were tested on the elevated plus-maze (EPM) for 5min. SR141716 did not significantly change EPM behaviors in vehicle-treated mice. In contrast, SR141716 precipitated a reduction in exploration of the open arms of EPM in mice repeatedly treated with THC vs vehicle. At 3.0mg/kg, SR141716 significantly reduced % open arm entries of the total arm entries, % open arm time of total time in arms, and the absolute time spent in open arms. No significant differences in the number of closed or total arm entries were observed, indicating that the behavioral changes were not due to altered motor activity. Collectively, the present results constitute the first evidence that cannabinoid withdrawal produces anxiety-like effects in mice. This animal model may help to identify the mechanisms that contribute to adaptations in the neuronal circuitry of the brain that are expressed as emotional symptoms of cannabinoid withdrawal.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
May
pubmed:issn
1872-7972
pubmed:author
pubmed:copyrightInfo
Copyright 2010 Elsevier Ireland Ltd. All rights reserved.
pubmed:issnType
Electronic
pubmed:day
21
pubmed:volume
475
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
165-8
pubmed:meshHeading
pubmed:year
2010
pubmed:articleTitle
Anxiety-like effects of SR141716-precipitated delta9-tetrahydrocannabinol withdrawal in mice in the elevated plus-maze.
pubmed:affiliation
Department of Pharmacology and Center for Substance Abuse Research, Temple University School of Medicine, 3420 N Broad St, Philadelphia, PA 19140, USA. phuang@temple.edu
pubmed:publicationType
Journal Article, Research Support, N.I.H., Extramural